Lenovo 100S-11IBR Hardware Maintenance Manual

To perform a factory reset, turn off your laptop. Then, press the Novo button (located next to the power button) to enter the Novo Menu. Select 'System Recovery' and follow the on-screen instructions to reset your laptop to its factory settings.
First, check for any unnecessary programs running in the background and close them. Update your operating system and drivers. Consider upgrading your RAM if possible. Also, perform a disk cleanup to free up space.
Click on the network icon in the system tray, select your Wi-Fi network from the list, and click 'Connect'. Enter the network password if prompted, and you should be connected to the Wi-Fi.
Visit the Lenovo Support website, enter your laptop model, and navigate to the 'Drivers & Software' section. Download the latest drivers for your system and follow the installation instructions provided.
Ensure the laptop is charged. Try a hard reset by removing the battery (if possible) and unplugging the power adapter. Press and hold the power button for 10-15 seconds. Reconnect the power adapter and try turning on the laptop again.
Turn off your laptop and unplug it. Use a can of compressed air to blow out any debris from between the keys. Wipe the keys with a microfiber cloth lightly dampened with a mixture of water and isopropyl alcohol.
Go to 'Settings', then 'Devices', and select 'Touchpad'. You can toggle the touchpad on or off from this menu. Alternatively, some models have a function key (such as F6 or F8) to quickly enable or disable the touchpad.
Check the power adapter and charging port for damage. Try a different power outlet. Update the battery drivers through Device Manager. If the issue persists, consider replacing the battery.
Lower the screen brightness, close unnecessary applications, and disable Bluetooth and Wi-Fi when not in use. Use power-saving mode and avoid charging the battery to 100% or letting it drain completely.
Unfortunately, the Lenovo 100S-11IBR has soldered RAM, which means it is not upgradeable. Consider optimizing your system performance by managing startup programs and running fewer applications simultaneously.